[deliverable/binutils-gdb.git] / gas / bignum.h

/* bignum.h-arbitrary precision integers
   Copyright 1987, 1992, 2003, 2005, 2007 Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   GAS is distributed in the hope that it will be useful, but WITHOUT
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
   License for more details.

   You should have received a copy of the GNU General Public License
   along with GAS; see the file COPYING.  If not, write to
   the Free Software Foundation, 51 Franklin Street - Fifth Floor,
   Boston, MA 02110-1301, USA.  */

/***********************************************************************\
 *									*
 *	Arbitrary-precision integer arithmetic.				*
 *	For speed, we work in groups of bits, even though this		*
 *	complicates algorithms.						*
 *	Each group of bits is called a 'littlenum'.			*
 *	A bunch of littlenums representing a (possibly large)		*
 *	integer is called a 'bignum'.					*
 *	Bignums are >= 0.						*
 *									*
 \***********************************************************************/

#define	LITTLENUM_NUMBER_OF_BITS	(16)
#define	LITTLENUM_RADIX			(1 << LITTLENUM_NUMBER_OF_BITS)
#define	LITTLENUM_MASK			(0xFFFF)
#define LITTLENUM_SHIFT			(1)
#define CHARS_PER_LITTLENUM		(1 << LITTLENUM_SHIFT)
#ifndef BITS_PER_CHAR
#define BITS_PER_CHAR			(8)
#endif

typedef unsigned short LITTLENUM_TYPE;
Commit	Line	Data
252b5132	1	/* bignum.h-arbitrary precision integers
ec2655a6	2	Copyright 1987, 1992, 2003, 2005, 2007 Free Software Foundation, Inc.
252b5132 RH	3
	4	This file is part of GAS, the GNU Assembler.
	5
	6	GAS is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
ec2655a6	8	the Free Software Foundation; either version 3, or (at your option)
252b5132 RH	9	any later version.
252b5132 RH	10
ec2655a6 NC	11	GAS is distributed in the hope that it will be useful, but WITHOUT
	12	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	13	or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
	14	License for more details.
252b5132 RH	15
	16	You should have received a copy of the GNU General Public License
	17	along with GAS; see the file COPYING. If not, write to
ec2655a6 NC	18	the Free Software Foundation, 51 Franklin Street - Fifth Floor,
ec2655a6 NC	19	Boston, MA 02110-1301, USA. */
252b5132 RH	20
	21	/***********************************************************************\
	22	* *
	23	* Arbitrary-precision integer arithmetic. *
	24	* For speed, we work in groups of bits, even though this *
	25	* complicates algorithms. *
	26	* Each group of bits is called a 'littlenum'. *
	27	* A bunch of littlenums representing a (possibly large) *
	28	* integer is called a 'bignum'. *
	29	* Bignums are >= 0. *
	30	* *
	31	\***********************************************************************/
	32
	33	#define LITTLENUM_NUMBER_OF_BITS (16)
	34	#define LITTLENUM_RADIX (1 << LITTLENUM_NUMBER_OF_BITS)
	35	#define LITTLENUM_MASK (0xFFFF)
	36	#define LITTLENUM_SHIFT (1)
	37	#define CHARS_PER_LITTLENUM (1 << LITTLENUM_SHIFT)
	38	#ifndef BITS_PER_CHAR
	39	#define BITS_PER_CHAR (8)
	40	#endif
	41
	42	typedef unsigned short LITTLENUM_TYPE;